I was on an LHR-CDG flight last thursday right down the back. There was a guy seated in the row immediately behind the Tempo Challenge curtain who was getting himself all excited and arguing with the FA because he had reserved Tempo Challenge and was sitting in Eco.

The reply from two different FA's - "But Sir, it's exactly the same".

Now, we were better off in economy (empty) than Tempo Challenge (full), but why would the Flight Attendants say that? Loud enough to hear three rows away? You could see the people sitting in Tempo Challenge wondering what they'd paid for (flexibility - I know, but I don't think they did)...